<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>

<div id="app"><h1>{{msg}}</h1></div>

<script src="../lib/vue.js"></script>
<script>
    new Vue({
        el: '#app',
        data: {
            msg: 'Hello World!'
        }
    })
</script>
</body>
</html>